Freeza's first 3 forms as a whole were just set up fot Goku vs Freeza so I think the faster pacing just helped it, plus Freeza decides to transform out of his 1st and 3rd forms faster than he originally intended because of Vegeta's taunt and Gohan's rapid powet growth.
The anime definitely added meat to Goku's first SSJ transformation and Gohan's first SSJ2 transformation (not the filler sequence where he spent 5 minutes buffing up for no reason in the episode after #16's death). The anime still made some power ups way too long though, Goku taking 3 minutes to...
The manga felt a bit rushed in the ending of the Cell Game where Gohan's Kamehameha clash with Cell was just a single chapter, and just consisted of Gohan getting overwhelemed before winning thanks to Vegeta's sucker punch. Other than in that instance and the Gohan Boo and Kid Boo final fights...
In the Freeza fight after Freeza went 2nd form, and in the Cell Games it felt way too dragged out in the anime. Most anime fillers were alright pre-Majunior arc though, but they did add a lot of unnecessary fluff between Daimao's death and the 23rd tourney
How would this change the events of Namek now that Goku survives with far milder injuries and Vegeta is extra angry? Since Goku would likely get the Saichorou potential unlock, how strong does he get in comparison to his gravity trained self?
Adapt the manga to make a better story. I don't trust Toei to make a good all-new story after their numerous blunders like GT, Slug, old Broly, Hildegarn and so on. Moro arc can be decent with a few changes like them involving the changes to Mecha Freeza's death in how Cranberry freed Moro to...